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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A306220 a(n) is the smallest prime p such that Kronecker(-n,p) = -1.

Table of values

n a(n)
1 3
2 5
3 2
4 3
5 2
6 13
7 3
8 5
9 7
10 3
11 2
12 5
13 2
14 11
15 7
16 3
17 5
18 5
19 2
20 11
21 2
22 3
23 5
24 13
25 3
26 11
27 2
28 3
29 2
30 7
31 3
32 5
33 5
34 3
35 2
36 7
37 2
38 5
39 7
40 3
41 13
42 5
43 2
44 7
45 2
46 3
47 5
48 5
49 3
50 7
51 2
52 3
53 2
54 13
55 3
56 11
57 5
58 3
59 2
60 7
61 2
62 5
63 5
64 3
65 7
66 19
67 2
68 5
69 2
70 3
71 7
72 5
73 3
74 7
75 2
76 3
77 2
78 5
79 3
80 11
81 7
82 3
83 2
84 13
85 2
86 7
87 5

List of values

[3, 5, 2, 3, 2, 13, 3, 5, 7, 3, 2, 5, 2, 11, 7, 3, 5, 5, 2, 11, 2, 3, 5, 13, 3, 11, 2, 3, 2, 7, 3, 5, 5, 3, 2, 7, 2, 5, 7, 3, 13, 5, 2, 7, 2, 3, 5, 5, 3, 7, 2, 3, 2, 13, 3, 11, 5, 3, 2, 7, 2, 5, 5, 3, 7, 19, 2, 5, 2, 3, 7, 5, 3, 7, 2, 3, 2, 5, 3, 11, 7, 3, 2, 13, 2, 7, 5]

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